DS705 Datasheet, PDF (4/54 Pages) Xilinx, Inc – Integrated adder for complex multiply or multiply-add operation

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XA Spartan-3A DSP Automotive FPGA Family Data Sheet
I/O Capabilities
The XA Spartan-3A DSP FPGA SelectIO interface supports
many popular single-ended and differential standards.
Table 2 shows the number of user I/Os as well as the
number of differential I/O pairs available for each
device/package combination. Some of the user I/Os are
unidirectional input-only pins as indicated in Table 2.
XA Spartan-3A DSP FPGAs support the following single-
ended standards:
• 3.3V low-voltage TTL (LVTTL)
• Low-voltage CMOS (LVCMOS) at 3.3V, 2.5V, 1.8V,
1.5V, or 1.2V
• 3.3V PCI at 33 MHz
• HSTL I, II, and III at 1.5V and 1.8V, commonly used in
memory applications
• SSTL I and II at 1.8V, 2.5V, and 3.3V, commonly used
for memory applications
XA Spartan-3A DSP FPGAs support the following
differential standards:
• LVDS, mini-LVDS, RSDS, and PPDS I/O at 2.5V or
3.3V
• Bus LVDS I/O at 2.5V
• TMDS I/O at 3.3V
• Differential HSTL and SSTL I/O
• LVPECL inputs at 2.5V or 3.3V
Table 2: Available User I/Os and Differential (Diff) I/O Pairs
Device
XA3SD1800A
XA3SD3400A
CSG484
User
Diff
309
140
(60)
(78)
309
140
(60)
(78)
User
519
(110)
469
(60)
FGG676
Diff
227
(131)
213
(117)
Notes:
1. The number shown in bold indicates the maximum number of I/O and input-only pins. The number shown in (italics) indicates the number
of input-only pins. The differential (Diff) input-only pin count includes both differential pairs on input-only pins and differential pairs on I/O pins
within I/O banks that are restricted to differential inputs.
Production Status
Table 3 indicates the production status of each XA
Spartan-3A DSP FPGA by temperature range and speed
grade. The table also lists the earliest speed file version
required for creating a production configuration bitstream.
Later versions are also supported.
Table 3: XA Spartan-3A DSP FPGA Family Production Status (Production Speed File)
Temperature Range
I-Grade
Speed Grade
Standard (-4)
Part Number
XA3SD1800A
XA3SD3400A
Production
(v1.32)
Production
(v1.32)
Q-Grade
Standard (-4)
Production
(v1.32)
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DS705 (v1.1) January 20, 2009
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Product Specification
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